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Subject: Re: [gentoo-user] PDF: convert to grayscale
From: Paul Hartman <paul.hartman+gentoo@gmail.com>
To: gentoo-user@lists.gentoo.org
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On Tue, Feb 8, 2011 at 7:50 AM, Nuno J. Silva <nunojsilva@ist.utl.pt> wrote:
> Does anyone know a tool (other than ghostscript) that is able to convert
> a PDF (or postscript) to grayscale?
>
> Ghostscript does this, but is unable to convert gradients and fills
> (they're replaced by bitmaps) which results in a too big file unless I
> drastically reduce quality.

Are you the creator of the document and want to save the original as
greyscale, or you want to convert an already existing PDF?

If the latter I think the easy way is to use ghostscript (pdf2ps) to
render it as greyscale postscript. Then you could convert the PS back
to PDF if you need to. But if you already tried that, then, I don't
know...